| Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils |
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| 作者姓名： | XIE Xiao-mei LIU Wei-ping ABID Subhani |
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| 作者单位： | [1]CollegeofEnvironmentalandResourceSciences,DepartmentofResourcesScience,ZhejiangUniversitvHangzhou310029,China [2]CollegeofEnvironmentalandResourceSciences,DepartmentofEnvironmentalScience,ZhejiangUniversity,Hangzhou310029,China |
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| 基金项目： | TheNationalNaturalScienceFoundationofChina(No .39970 1 4 6) |
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| 摘 要： | Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils was studied. The results showed that the DT50 of bensulfuron-methyl was reduced from 16 d to 9 d in soil with one-year bensulfuron-methyl application. Rapid bensulfuron-methyl degradation was happened to previously untreated soil by addition 5% rapid bensulfuron-methyl adapted soil and was inhibited following pre-treatrnent with broad-spectrum antibiotic chloramphenicol. In bensulfuron-methyl adapted soil mineralisation of ^14C labeled bensulfuronmethyl to ^14CO2 occurred at a faster rate than with previously untreated soil. It was concluded that rapid bensulfuron-methyl degradation upon repeated application is probably linked to the adaptation of soil bacteria which can utilize bensulfuron-methyl as a source of carbon and energy.
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| 关 键 词： | 水稻土 快速退化 重复利用 细菌 化肥 |
| 收稿时间： | 9/6/2002 12:00:00 AM |
| 修稿时间： | 2002/11/5 0:00:00 |
Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils |
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| XIE Xiao-mei,LIU Wei-ping,ABID Subhani.Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils[J].Journal of Environmental Sciences,2004,16(1):49-52. |
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| Authors: | Xie Xiao-mei Liu Wei-ping Abid Subhani |
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| Institution: | 1. College of Environmental and Resource Sciences, Department of Resources Science, Zhejiang University, Hangzhou 310029, China
2. College of Environmental and Resource Sciences, Department of Environmental Science, Zhejiang University,Hangzhou 310029, China |
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| Abstract: | Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils was studied. The results showed that the DT _ 50 of bensulfuron-methyl was reduced from 16 d to 9 d in soil with one-year bensulfuron-methyl application. Rapid bensulfuron-methyl degradation was happened to previously untreated soil by addition 5% rapid bensulfuron-methyl adapted soil and was inhibited following pre-treatment with broad-spectrum antibiotic chloramphenicol. In bensulfuron-methyl adapted soil mineralisation of 14 C labeled bensulfuron-methyl to 14 CO_2 occurred at a faster rate than with previously untreated soil. It was concluded that rapid bensulfuron-methyl degradation upon repeated application is probably linked to the adaptation of soil bacteria which can utilize bensulfuron-methyl as a source of carbon and energy. |
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| Keywords: | bensulfuron-methyl rapid degradation paddy soil |
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